A persistent vegetative state is a condition of patients with severe brain damage in whose coma has progressed to a state of wakefulness without detectable awareness. However, they may exhibit some behaviors that can be construed as arising from partial consciousness, such as opening their eyes, grinding their teeth, smiling, shedding tears, moaning, or screaming without any external stimuli. The symptoms can sometimes project the image that the pvs patient is patient is becoming well. However, in most instances this is not the case. This has rarely been the case after a patient has been in a PVS state for more than a year. After a year, the chances that a PVS patient will regain consciousness are slim and most patients who do recover consciousness experience significant disability. The longer a patient is in a PVS, the more severe the resulting disabilities are likely to be. Rehabilitation can contribute to recovery, but many patients never progress to the point of being able to take care of themselves. PVS patients should be disconnected after a year in hospital with little improvement. Chances are that they are not ever going to vivaciously wake up. Unplugging a PVS patient want deprive them from anything. They usually are not even aware of their surroundings. And it want be taking their life away because you can not really consider it living when they do not have any cognitive functions. It is best just to pull the plug and remove them from the life-sustaining machines at this point so they do not have to live their last days or even years in some cases lying in a hospitable bed.